PhD Thesis

Changxi Zheng, Cornell: Physics-Based Sound Rendering for Computer Animation

Automated Constraint Placement to Maintain Pile Shape

Shu-Wei Hsu, John Keyser We present a simulation control to support art-directable stacking designs by automatically adding constraints to stabilize the stacking structure. We begin by adapting equilibrium analysis in a local scheme to find “stable” objects of the stacking structure. Next, for stabilizing the structure, we pick suitable objects from those passing the  equilibrium analysis and then […]

Wetting Effects in Hair Simulation

Witawat Rungjiratananon, Yoshihiro Kanamori, Tomoyuki Nishita There is considerable recent progress in hair simulations, driven by the high demands in computer animated movies. However, capturing the complex interactions between hair and water is still relatively in its infancy. Such interactions are best modeled as those between water and an anisotropic permeable medium as water can flow into […]

Large-scale Fluid Simulation using Velocity-Vorticity Domain Decomposition

Abhinav Golas, Rahul Narain, Jason Sewall, Pavel Krajcevski, Pradeep Dubey, Ming Lin Simulating fluids in large-scale scenes with appreciable quality using state-of-the-art methods can lead to high memory and compute requirements. Since memory requirements are proportional to the product of domain dimensions, simulation performance is limited by memory access, as solvers for elliptic problems are […]

SIGGRAPH Asia 2012 papers

Here are the physics-animation related SIGGRAPH Asia papers announced far, and I’ll be adding more as they come out. See Ke-Sen Huang’s page for the broader list. Adaptive Anisotropic Remeshing for Cloth Simulation Large-Scale Fluid Simulation using Velocity-Vorticity Domain Decomposition Staggered Meshless Solid-Fluid Coupling Automated Constraint Placement to Maintain Pile Shape Speculative Parallel Asynchronous Contact […]

Rig-Space Physics

Fabian Hahn, Sebastian Martin, Bernhard Thomaszewski, Robert Sumner, Stelian Coros, Markus Gross We present a method that brings the benefits of physics-based simulations to traditional animation pipelines. We formulate the equations of motions in the subspace of deformations defined by an animator’s rig. Our framework fits seamlessly into the workflow typically employed by artists, as our output […]

Efficient Simulation of Example-Based Materials

Christian Schumacher, Bernhard Thomaszewski, Stelian Coros, Sebastian Martin, Robert Sumner, Markus Gross We present a new method for efficiently simulating art-directable deformable materials. We use example poses to define subspaces of desirable deformations via linear interpolation. As a central aspect of our approach, we use an incompatible representation for input and interpolated poses that allows us to […]

Adaptive Anisotropic Remeshing for Cloth Simulation

Rahul Narain, Armin Samii, James O’Brien We present a technique for cloth simulation that dynamically refines and coarsens triangle meshes so that they automatically conform to the geometric and dynamic detail of the simulated cloth. Our technique produces anisotropic meshes that adapt to surface curvature and velocity gradients, allowing efficient modeling of wrinkles and waves. […]